package com.lanting.uestc.speaking.utils;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Random;

public class JudgeLogic {
	private static String[] letter = {
			   "a","b","c","d","e","f","g","h","i","j","k",
			   "l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
			   "A","B","C","D","E","F","G","H","I","J","K",
			   "L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z",
			   "1","2","3","4","5","6","7","8","9","0"};
	public static String getCallID(){
				Random random ;
			 	random = new Random();
			  ArrayList<String> temp = new ArrayList<String>();
			  StringBuffer code = new StringBuffer();
			  temp.addAll(Arrays.asList(letter));
			  for (int i = 0; i < 8; i++) {
				   code.append(temp.get(random.nextInt(temp.size())));
				  }
			return code.toString();
		}
}
